Zinc Nickel 12-15% - screw-express.com

PROCESS

Zinc-nickel consists of electrolytically applying a zinc-nickel alloy

on the part. Zinc-nickel 12-15% is the recommended solution adopted by the

the automotive industry for the replacement of dichromate zinc-plated parts.

The 12-15% nickel content provides :

- A very significant improvement in corrosion resistance, particularly at high

Very significant improvement in corrosion resistance, especially at high temperatures

- An excellent base for parts requiring rubber bonding

- A hardening of the surface layer giving it an excellent resistance to

to shocks and scratches

Processes used :

- Barrel coatings (bulk) for small, medium and large series.

- Unitary ''attachment'' for small series.

- Thickness: 5 to 25µm

- Corrosion resistance: white rust 240h

- Substrate: Steel and cast iron

- Colour: grey, black

- Electrical conductivity: YES

- Compatible with aluminium and its alloys (low potential difference)

- Abrasion resistance due to its very high surface hardness (400-450 HV)

Surface suitable for rubber adhesion

- Passivation: blue, iridescent, black, grey without Cr6

- Organic mineral finish (FOM or Top Coat) :

- reinforced (increases corrosion resistance)

- lubricated (control of the friction coefficient)

- reinforced and lubricated (combines corrosion resistance and improved coefficient of

coefficient of friction)

- Cr6-free process (ELV/ROHS compliant)

- Degassing carried out in a batch oven

- Possibility of carrying out tests:

- Salt spray tests according to EN ISO 9227 + D171058 (PSA and Renault)

- Thickness measurements by X-ray fluorescence

- Adhesion

- ...

- Inspection report

- Certificate of conformity

- B154102

- 470100

- MTC 50004

- Complies with the requirements of the automotive and aerospace industries.

Before carrying out this treatment, we suggest that you proceed with the heat treatment of your part.